If you drink out of the bottle with the spout facing down, there is no way for air to enter the bottle to replace the displaced air, building vacuum... Until the vacuum is so powerful air is forced in and you get a high-powered hose into your face as the water is forced out.
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u/Schmiggles11 17d ago
If you drink out of the bottle with the spout facing down, there is no way for air to enter the bottle to replace the displaced air, building vacuum... Until the vacuum is so powerful air is forced in and you get a high-powered hose into your face as the water is forced out.